Vise clamp



March 26, 1940. J, LEmMAg 2,195,277

VISE cum: I

Filed Jun 17. 1937 INVENTOR I J zcls Elem/nan A ORNEY Patented ai. 26, 1940 UNITED STATES.- PATENT' OFFICE 7' 2,195,277

VISE CLAMP l Jack Kleinman, New York, N. Y. Y Application June 17, 1937,Serial No. 148 643 '2 Claims. (o1. 77 -6s V This invention relates toimprovements in vise clamps and more particularly relates to drill viseclampsmor the like and parallel. aligning attachments therefor.

'5" One of the objects of the invention is to provide a unitary deviceof the character described having novel means adapted to, support fworkclamped therein in paralleled aligned relationship to supportingsurfaces of the device andconsequently presenting the Work, in propernormal alignment. y

Another object of the invention is to provide a unitary mechanism thatis not easily gouged by drills or by tools operating on the Work; offersT5 a maximum of protection against lodging of chips and consequentlyno'interference thereby; and is easily cleanable. x

Other objects and advantages willappear from the hereinafter detaileddescription of theinvention having references to the accompanyingdrawing illustrating several forms'of the invention, whereint I I vFigure 1 is a perspective view ofv one form of the invention asembodied-in a drill vise.

' Figure '2 is a side elevation partly in section of the form-shown'inFigurel. 1 a b Figure 3 is a fragmentary side elevational view of theform shown in Figure 1, nd as employed in clamping a piece of thinstock;

Figure 4' isa fragmentary plan'view of amour fied form of the invention.

Figure 5 is a section taken substantially along the line 5'5 of Figuree.1 I Figure 6 is a View similar to'Figure'B, showing another form of theinvention; 1 Figure 7 is a perspective, view of "certain cooperatingparts of the form shown in Figure6.

Figure '8 is a fragmentarysectional View of p still another form of theinvention.

Referring to Figures 1,2, and 3 of the draw 'ing there is illustrated avise, commonly known as a drill vise, which includes a body l0 havingabase portion l2 and apreferably'integral upwardly projecting jaw I 4 atone end; a screw boss I6 at the other end, preferably formed integrallywith the base portion l2 and providinga recess l8. Adapted toslidewithin'this recess is a 'mov-' able jaw member 20.. The lowersurface 22 is a precisely and accurately finished plane surface toprovide accurate disposition of the vise upon a bed plate of a drill ormachine'having other simi lar cooperating finished' surfacesnormal orparalelly disposed with the axis ofthe tool of the machine.

A similar accuratelyandpeas-1y finished up reference character in" Fig.2;

per surface 24 parallel "to the surface 252 is pro-,

' vide'd at the base of 'the'recess', that is, the upper horizontalsurface of the body l0, and an accu- 'rately finished surface 26' isprovided at the base as indicated at 30." The screw is se'cured'to' themovable jaw 20 in any well known manner so that upon rotation ofjthescrew the movable jaw 20 is advanced toward or drawn away'from thestationary jaw M. The jaws provide inwardly directed surfaces 32' and 34against which are secured hardened work clamping plates 36 and 38respectively. These; plates are finished so as to 20 provide accuratelyparallel surfaces 40 and 42 adapted to engagewo'rk pieces; I

l A piece of work is: illustrated in Figure 2. a

y The plates 36 and 38ers adapted to be spaced from the finished surface24 previously described, 25"

thereby providing recesses 46 and 48. I a The lower edges of theseclamping plates provide accurately finished plane nether surfaces scans5 2so as to be parallel with the surface 24 v I and hem a common plane pat a distance d from 30' the plane of the ur'face 24',

b v r as indicated by the A pair of parallel members 54 and 56 eachcomprising a strip of metal finished to such size along dimension d asto fit very accurately and 3'5 closely but still slidable between thespaces pr0-- vided between the nether surfacesBU and 5Z,'and

the upper surface 24. It is desirable to provide a minimum of slidingdefianc between said surfaces in the planes defined bythe dimension at.'0-

These parallel 'members are also preferably of hard materialandthinnerin their dimension 27 than their respective overlying hardenedplates,

and are adapted to extend inwardly fiohitherespective clamping surfaces40 and 42 of"th'e 45" clamping plates36 and 38 respectively, asillusti'ated in Figure 2; and are adapted to wholly underlie theirrespective plates when urged into their respective recesses- 4'6 and 48,so that their opposed faces are back of the'clamping surfaces 50 49 and42" as illustrated bytheir positibns as shown in Figure 3. 1

While clamping plates are emp1oyed,=it is to be understood that therecesses partially provided thereby may be'ha'dbycutting and grindinginto 55- pendent. bores. i At the upper surface 24 of thebase I0 and atthe solid stock of the jaw. The cut in the rigid jaw being in the formof an undercut channel and in the slidable jaw as a corner undercut. Inthe case of the slidable jaw, in the solid or plate recessed jaw, theupper surface 24 cooperates in forming a channel-shaped recess. In therecess of the solid jaw, this recess may be cooperative with a coplanalextension of the surface 2d to underlie its nether surface or suchchannel-type recess may be cut and ground independent of (above orbelow) the surface 24.

In any event, the nether surface of the recess and the facing orunderlying surface thereof are essentially precisely-finished planalsurfaces accurately ground to confine work supporting pieces preciselyparallel and cooperative therewith.

These parallel work supporting members arepreferably provided withyielding means for urging them inwardly into the position shown in fulllines in Figure l and in this position their inner limit is determinedby engagement of heads 58, of screwlifl secured to respective parallelmembers. Each of the screws 60 is adapted to slide loosely in a compoundbore 62, each providing a shoulder64 for engagement with a head 58 andan oppositelyifacing shoulder adapted to form a seat for a spring 68.These springs are preferably but not essentially adapted to surround thescrews 60 and are adapted to urge the parallel members inwardly towardeach other. One or more screws and/or springs may be employed, with the,springs and screws operating in indelimits are so arranged that theyproject slightly inward ofthe clamping surfaces 43 and 42.

Parallel shelves s-s are thusprovided upon which the work may rest'prior to clamping. This is for the purpose of providing a. parallel seator positioning meansin a plane parallel tothe base surface of the visewhich is adapted to rest upon the surface of the machine such as a bedplate of a drill press and thus presents the work piece parallel andnormal to the disposition of the machine.

In employing the device in a drill pressfor instance, the hole drilledwill be normal to the plane of the supporting shelves or surfaces s andthis supporting plane is spaced from the upper surface of the base sothat in drilling through the work the tip of the drill, or other toolemployed such as a ream, does not gouge the upper surface upon which themovable jaw slides and against which the movable jaw is positioned.

In performing operations on the work piece the tool chips gathered inclamps of this character lodge in corners and upon surfaces which i mustbe removed before aligning a subsequent work piece. With theconstruction of ,the parallel members as described, any chips or evendust upon the aligning surfaces s and in the corners are easily removedtherefrom.

Duringa drilling operation close to the clamping surfaces and within theprojecting plane of the parallel members, the drill may strike aparallel member without injury, as this piece is hardened so as toresist the cutting of the drill; and upon contact of the drill with theparallel member it is adapted to recede into the recess and permit thedrill to pass. Any chips remaining upon the, aligning surfaces s-s fromthe previous work pieces are easily removed by manually pressing theparallel members outwardly and completely into their recesses thuswiping the surfaces. s-s clean of any chips which would ordinarilyinterfere with the proper alignment of subsequent work pieces.

It has also been found that if dust collects I upon the aligningsurfacesv especially in the corners, and if not removed, the work piecewill be positioned out of line. The dust can however be easily removedby blowing through the recesses. in order to insure reception of theparallel members without; interference; and any chips may become lodgedin the recesses and on the parallel members mayalso beeasily removed byblowing through the recesses. I

Referring to Figure 2 it will be seen that the device as constructedaccording to the above description is capable of clamping thin stockwherein the seats provided by the parallel members is not essentiallyemployed in alignment of such thin stock but may be employed if desired.

In some forms ofthe invention particularly as illustrated in Figure 4,it is not essential that uninterrupted surfaces 8 be presented tosupport the work above the upper surface of the 'base,; and devicesdefining a parallel plane but presenting only small area crimes ofcontact with the work are preferred in some cases; an example of thisconstruction is here shown.

This device comprises pins 'IZ urged inwardly toward each other bysprings 14 and limited in their inward movement by engagement of flanges7 16 on the pins 12 and shoulders 18 provided by the compound bore, 80.

PlugsBZ may be employed to close off the bores I and provide a reactingseat for the springs. Al-

though inthis form shown in Figures ,4and 57,

the pins are illustrated as lying under the surfaces 50 and 52 of theclamping plates 34 and 36, it will be seen-fthat' the clamping, platesmay extenddownto the upper surface 24 of the base and the pins mayproject through holes in these clamping plates. :0

Referring to the modification shown in Figures 6 and 7 the clampingplates 84 may be provided with a downward projection 86 adapted toengage the upper centralportion of a leaf spring 88 secured tothe-parallel member 90. This construction permitsthe parallel members torecede at either end, in response to being in thepath of a drill, and isnot confined to parallel recession as in the previous forms, when sofixed tea leaf spring as shown. 'i

t has been. found that by confining the clearance to the lowest possibleslide tolerances, the parallel memberscannot be displaced from theirrecesses by longitudinal rotation since no such rotation is permitted bysuch close confinement of the parallel member between finished surfaces24 and the finished surfaces 9|.

A suitable cut-out'92' is provided int-he upper portion or the members90 in orderto expose the upper central portion of. the leaf spring for,

engagement with, the downwardly directed projection 86.

Referring to Figure 8, another modification of 75 A the form shown inFigures 6' and 'Zis hereillustrated and includes a bent projection 94at-the' upper central portion of the leaf spring which is adapted tolimit the inward movement of its associated parallel member by theengagement of the projection 96 with the rear face of theassociat'edclam-ping plate 96. It will be particularly noted that, inthis instance, the lower surface 98:

of this plate "1% and the upper coacting surface Hill of the parallelmember I02 are finished in a simpler manner comparison to theconstruction shown in Figures 6 and '7. i I

In order to permit the full recession of the member H12; a recess IM,which may be' in the form of a drilled hole, is provided to freely re-.-

ceive the projection 94 and thereby permit the complete recession of themember I82. 1 v

It will be noted that the heads 58 inthe modification shown in Figures1-3 limit the movement of the work supporting means in the directionwhere the said means intersects the plane defined byv itsassociatedjclamping surface. This con struction also prevents thedisengagement of the 'work supporting means from the vise clamps andproduces a unitary structure.

Likewise, the heads 16 in the construction shown in Figures 4 and 5prevent the displace ment or disengagement of the Work supporting and 8serve the same purpose as the heads V 16 above described. a

Having thus described my invention particularly in connection with thepreferred embodim'ents illustrating the principleinvolvedyit can be seenfrom the foregoing description of the device that other forms may be hadwithout departe ing from the principle of the invention-as defined inits broader aspects in the following claims. What I claim as new anddesire to secure by Letters Patent, is:

1. In a vise clamp of the character described including a base memberhaving a precisely finished base plane surface and afully exposedprecisely finished upper plane surface precisely I parallel with saidbase surface, a rigid clamp ng jaw extending upwardly from and at rightangles to said base member, a movable jaw slidable on said uppersurface, one of said jaws having an open-ended recess extendingcompletely thereacross, said recess including a precisely finishednether plane surface precisely parallel to and facing said uppersurface, and a single movable work supporting means having a preciselyfin ished surface adapted to move in said recess within highly confinedlimits, said. supporting means having an upper surface slidablycooperative against said nether surface of said recess.

2. In a vise clamp of the character described including a base memberhaving a1 precisely finished baseplane surface and-a fully'expos'edprecisely finished upper plane surface precisely parallel with said basesurface, a rigid clamping jaw extending upwardly from and at rightangles to said base member, a movable jawslidable on said upper surface,one of said jaws having an open-ended recess extending completelythereacross, said recess including a precisely finished I r base member,a movable jaw slidably supported ,onsaid upper surface and adapted forclamping means adapted .to move .within highly confined upper surface, aclamping plate contacting one of said jaws and presenting a nethersurface spaced from said upper supporting surface "wherebya recess isprovided between said nether surface of said clamping plate and saidupper finished surface,- said surfaces comprising said recess beingprecisely parallel, and a single movablework supporting means workablein said recess and closely confined between said nether surface ofsaid-clamping plate and said upper finished surface. :4. Ina vise clampof the character described including a base member having a preciselyfinished base plane surface and an exposed precisely finished upperplane surface precisely parallel to said base surface, a rigid clampingjaw extending upwardly from and at right angles to said base member, amovable jaw slidable on said upper surface, clamping plates on each ofsaid jaws presenting facing. clamping surfaces, said clamping platesbeing spaced at precisely identical distance from and precisely parallelto said upper plane surface whereby open-ended recesses are providedthereunder, a single work supporting means movable in each of saidrecesses and closely confined between said clamping plate and said base,said means adapted to project from said recesses beyond their respectiveclamping surface, said recesses being of such depth to receive entirelytherewithin their respective .wo'rk sup porting means in retractedposition thereof.

' 5. In a vise clamp of the character described including a base memberhaving a precisely finished base plane surface and an exposed preciselyfinished upper plane surface precisely parallel to said base surface, arigid clamping jaw extending upwardly from and at right angles to saidbase member, a movable jaw slidable on saidupper surface, clampingplates on each of said jaws presenting opposed clamping surfaces,

the lower ends of said clamping plates being equally spaced from andprecisely parallel to said upper supporting surface whereby open-endedrecesses are formed thereunder, a movable work supporting means in eachof said recesses and closely confined between said clamping plate andsaid base. and adapted to project from said recesses beyond their saidrespective clamping surface, saidlrecesses being of such depth as toreceiveientirely therewithin their respective work supporting 'means inretracted position, and means captively engaging said work supportingmeans to their respective clamping jaws and for limiting the saidprojection thereof.

.6, Ina vise clamp of'the character described including a base memberhaving a finished base plane surface and a freely exposed preciselyfinished upper plane surface precisely parallel to said'base surface, arigid clamping jaw extendingupwardly from and at right angles to saidopposition with said rigid jaw, said rigid jaw having an open-endedrecess extending completely thereacross and overlying said upper sur-Iii.

face, and a single movable work supporting ported on said'upper surfaceand adapted for clamping opposition with said rigid jaw, said movablejaw having an open-endedrecess extending completely thereacross andoverlying said finished upper surface, and a single movable worlrsupporting means in said recess and having precisely finished oppositeupper and nether surfaces, said work supporting means adapted toslidably rest upon said upper surface of they base member.

JACK KLEINMAN.

